Extended Data Fig. 1: Identification of rhombohedral pentalayer graphene.
From: Correlated insulator and Chern insulators in pentalayer rhombohedral-stacked graphene
a, AFM topography map of a pentalayer graphene sample on a SiO2/Si substrate. (The small region on the right corresponds to a graphene tetralayer.) b, Near-field infrared nanoscopy image of the same pentalayer graphene sample as in a, showing different contrast on the pentalayer region. The bright region corresponds to Bernal stacking and the darker region corresponds to rhombohedral stacking. c, Raman spectra taken at rhombohedral and Bernal stacking domains in the pentalayer graphene sample as in b. ω is the Raman shift.
